Mass is Always Conserved
aligned to Ngss Hs-ps1-7
Learning Objective
I can apply the law of conservation of mass to chemical reactions.
Lesson Flow
Watch Video
The Law of Conservation of Matter
Professor Dave Explains
Guided Notes
Key concepts students will learn:
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The law of conservation of matter states that matter cannot be created or destroyed, only converted from one form to another.
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When water boils, the steam has the same mass as the liquid water because the water molecules only speed up and move away from each other.
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When a copper pipe rusts, it gains mass because oxygen atoms from the atmosphere bond to the copper atoms in the pipe.
Practice
7 questions • Multiple choice & Short answer
Exit Ticket
“When 4 grams of sodium react with chlorine, 10 grams of sodium chloride is produced. How many grams of chlorine reacted?”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
